Slip flask



A. DIEHL SLIP FLASK Feb. 4, 1930.

Filed May 2, 1928 2 Sheets-Sheet l .INVENIOR .FLZCUIZS flw/LL ATTORNEY Feb. 4, 1930.

A. DI'EHL SLIP FLAsK I 2 Sheets-Sheet 2 Filed May 2. 1928 w rl l l BY I . ATTORNEY Patented Feb. 4, l

PATENT OFFICE ADAM munnon spams-FIELD, 01110" SLIP FLAsK Ap'plication filed May 2,

This invention relates to improvements in slip flasks and it consists of'the constructions,

combinations and arrangements scribed and claimed 7 1 I One of the objects of the invention is to provide a slip flask equippedwith a sand retaining device having components at a plurality of sides of the flask which arefretractable'from the sand with the natural action of removing J thaz elementof the flask by which it car- Another object of the invention is to pro 'vide a flask wherein particular attention is paid to the alignment and holding'of the cope in proper position on the drag, the desired effect being gotten bya novel arrangement of double guidesand pins on the cope and drag respectively. I

A further object of the invention is to so 7 structurally reinforce the wooden planks of "which the flaskis partly composed that the period of usefulness of the flask is greatly extended.

' Other objects and advantages appear in the following specification reference beingmade to the accompanying drawings in which; I

Figure 1 is a perspective viewof the slip flask illustrating the improvements. Figure 2 is 'a plan view of the slip flask,

Figure 3 is an invertedfpers'pective view of the cope or upper element of the flask, the improved sand retaining device being the subject of particular illustration," a I v Figure 4 is a cross section of the slip flask taken substantially on'theline 4:4 of Figure 2 but illustrating a sand mold in position therein, F r

Figure 5 is a detail horizontal section taken on the line 55 of Figure 4,

Figure 6 is adetail perspecti of the corner clamps, v p .I

Figure 7 is a'detail' horizontal section of one of the cornersof one ofthe flask elements,

' Figure 8 is a detail cross section taken on I the line 88 of Figure 1. v w By way of a brief introductionit is deemed desirable to outline the mode of use of flasks in molding so .that the readenmay be acquainted with the purposesof the various imve view of one herein de-'f lmltting removal of theipattern after the sand the sand grips.

provements' The herein disclosed flask will .1

1928. Serial No. 274,610.

type in which the elements-are separable; this provision serving the obvious purpose of perhas been rammed around'it.

3. It is also a quality of the sand flask to contain and hold the sand only during the preparation of'the mold whereupon the flask'may he slipped off for use elsewhere, leaving the )mold standing in readiness for the recept of the molten metal. The foregoing stateme 'the invention indicate the various directions inwhich the improvements in the sli flask have been effected. The first has to o with These comprise devices usuion nts of theobj ects of ally carried by the upper flask element for cope from which they project into the sand to retain the sand within the cope as the latter is lifted from the drag for the purpose of removing the pattern around which the sand has been packed. a

Secondly, the improvements have to do with the proper centering or alignment of the cope upon the drag. It is a fact that no two molders will use a flask in the same way. One will spring the flask pins by which the drag and, flask are fitted together more" than another, and in order to make the alignment of the flask with the drag a matter of certainty the use of an ingenious arrangement of doubleguides; and pins-on the cope and drag respectively has been adopted.

'Thethird item of improvement has to do .with the. general construction of the flask ele- 'ments. planks or boards. so reinforced by corner v clamps as to make them absolutely rigid. The H These are composed of. wooden various phases of the invention arenow dealt with in detail. 1 7 Figure 1 illustrates the slip flask in its entirety. It comprises thecope 1 and the drag 2, the former of whichis set in position upon the latter in order to complete the slip jacket.

- Usually the drag 2 isset upon a board .(not' shown) so-that the'completed mold may be desirably moved about after the slip flask has been removed. j r a In Figure 4 the slip flask is shown in positionarounda-mold 3. According to practice berrecognized as belonging to the familiar the sand is first poured into the lower half or drag 2 whereupon thepattern 4 is laid in position. The second half or cope 1 is then set upon the drag 2 and the necessary additional sand poured in and rammed around the pattern. It is necessary to hold the rammed sand in position within the cope 1 while the latter is removed from the drag 2 for the taking out of the pattern 4. This is accomplished by a sand retaining device carried by the cope.

Grip bars 5 and 6 extend the full length of the inner edges 7 of opposite sides 80f the cope 1. Pairs of sectional grip bars 9 and 10 extend along the edges 11 of the remaining opposite sides of the cope. The respective pairs of sectional grip bars are associated with the main grip bars 5 and 6 and are operatively connected therewith by links 12 and 13, the connections being made at pivotal points commonly designed 14.

Slots 15 and 16 in the main grip bars 5 and 6 and aligning with each other transversely of the cope 1 (Fig. 5) receive headed pins 17 by which the bars are retained against the edges 7 and by which the bars are guided upon straight paths of movement inwardly and outwardly of the cope in directions that oppose each other in the proper operation of the bars. Diagonal slots 18 and 19 in the sectional grip bars of each pair and at angles to each other in adjacent grip bars of the respective pairs, receive headed pins 20 by which the sectional bars are retained against the edges 11 for movement inwardly and outwardly of the cope in directions at angles to each other.

These motions are the simultaneous effect of the rocking of shafts 21 by combinedmeans of the handles 22 and crank ends 23, both being produced by properly bending the shafts as clearly shown in the drawings. The shafts are adequately mounted in bearings 24 upon the copel.

Lugs 25 and 26 on the main grip bars 5 and 6 loosely receive the crank ends 23 of the shafts 21. A loose connection is essential to prevent binding of the crank ends upon turning of the shafts. A lifting of the handles 22 produces direct outward movement of the confronting main bars 5 and 6, the connecting links 12 and 13 causing outward movements of the pairs 9 and 10 of the sectional grip bars, such movements however, being in diagonally opposite directions by virtue of the relative disposition of the slots 18 and 19 of the various retaining pins 20.

Sand is prevented from lodging around the various grip bars by grooves 27 on the exposed sides and depressions 28 on the sides next to the edge of the cope 1. These grooves and depressions are placed in communication by escape holes 29. These holes are tapering in the direction of the cope edge. In the instance of each of the sectional grip bars the depressions 28 (Fig. 8) decline slightly in the outward direction so that anysand accumulating between these grip bars and the adj acent edge of the cope will readily work to the outside. Slight protuberances 3O arising at intervals from the declining surface 28 of the pairs of grip bars coact with the continuous but slightly raised edge 49 in affording an even bearing for the bars upon the cope.

Any sand tending to lodge upon such edges will be scraped loose by the adjacent sharp edge of the escape holes. The latter may either be made round as illustrated in a number of instances in Figure 5, or may be in the shape of angled slots in that respect resemjgling the slots 18 and 19 of the sectional grip ars.

An arrangement of guides on the cope 1 and pins on the drag 2 ensures accurate registration of one flask element upon the other. Brackets 31 and 32 appropriately secured to the cope 1 as at 33 (Fig. 1) and having ribs;

34 embedded in the adjacent sides of the cope to ensure rigidity, include outstanding flanges 35 with slideways 36 on opposite sides to which guides 37 are applied. The guides and flanges have slots through which the securing bolt 38 passes. The arrangement provides for necessary adjustment of the guides;

Pins 39 and 40 formparts of brackets 41 and 42 that are firmly secured to the drag 2. Both the pins and guides may be of any de-' sired shape, but the angular form illustrated is preferred both for the rather extensive bearing surfaces as well as the, strength afforded. The pins 39 and 40' stand in parallel relationship so that'the guides 37 easily ride down upon the pins when placing the cope '1 upon the drag. It is obviously necessary to provide openings 43 in the outstanding flanges 35 for the admission of the pins. The use of the double guides 37 so extends the bearing surface that springing of the pins 39 and 40 will be quite impossible in the'ordinary use of the flask. Upon occasions when the handles'22 may not be employed as means to lift the cope 1 the'outstanding flanges 35 serve admirably in that capacity.

Ordinarily it is preferable to construct the elements of the flask of wood. The sides of both the cope and drag are therefore composed of wooden bars or boards. These must be of sufficient thickness to afford the necessary strength. The corners are both secured and reinforced by means of clamps generally designated 44. These clamps include ribs 45 (Fig. 6) to be embeddedin corresponding grooves 46 (Fig. 7) in the outer surface of the flask sides. Any mode of joining adjacent ends of the flask sides may be adopted, and it is generally preferable to bind the out er exposed edge of both the cope 1 and drag 2 by metallic members 47 and 48. 1 These are used as wearing surfaces The operation is readily understood. Assume that the sand has been rammed around the pattern 4 in Figure 4 and that the inolder I I Y is about to remove the pattern. The handles 22 have been pushed down toward the out standing flanges 35, the attendant rocking of the shafts 21 having turned the crank ends 23 inwardlytoward the flask so that the various grip bars wereprojected into the flask.

' Upon lifting the cope 1 off in order to gain access to the patternt it is necessary .to leave the handles 22 alone because the various grip bars must be permitted to remain in position thus to support the sand in the cope. Upon this occasion the outstanding flanges 35- are to be used as lifting handles. Having re-' moved the pattern 4 the molder places the cope 1 in the former posit-ion upon the drag 2. The pins 39and40 and the doubleguide's .37 ensure absolute fidelity in ire-registering the components of the pattern space.

3 After realigning "the halves of the sand mold it is now desirable to remove the cope 1. I

7 An upward pull on the handles 22 produces a simultaneous retraction of the main grip bars 5 and. 6 and the pairs ofsectional grip bars 9 and 10, the action being'accomplished on this wise An upward lift of the handles 22 rotates the shafts 21 so as to turn the crank ends 23 outwardly thus carrying the main grip bars 5- and 6 therewith.

The latter are movable in paths at right angles to the adjoining sides of the cope 1. The pairs 9 and 10 of sectional grip bars are carried withthe main gripbars, being connected therewith by the links 12 and 13. Al-

though, the movement of these. bars is at acute angles to theadjoiningsides of the cope, nevertheless retraction of the bars results. The retractingmovement of all of the grip bars is simultaneous when both 7 elements from the sand mold. Although not.

, intended, yet the drag 2 may be equipped handles 22 are shifted at once.

The characteristic tapering of the cope and drag sides facilitates the removal of these so shown nor in the majority of instances so with a similar arrangement of sand retaining devices, although, as already stated hereinbefore the usual board upon which the mold is built will serve to retain thesand in the drag .2should there be any preliminary occasion for moving the mold.

Mention has been made of the ribs 34 on the brackets 31 and 32 (Fig. 4:) that are emthe scope ofthe' claims. I

r I claim V 1'. A flask element having pins protruding from theedges of aplurality of sides, a main grip bars.

' a shaft having a crank endconnected with the grip bar, and a handle forming part of grip bar having transverse slots receiving the pins of one of the sides and having'a lug, apair of grip bars having diagonal slots receiving the pins of adjacent sides, a shaft ournalled upon the elementhaving a handle for actuating it and a crank end for engaging the .ljug ofthe main grip bar, and links connecting-the main grip bar with'the pair of 2. In a flask element, a sand retaining device movably mounted thereupon having a depression and communicating escape holes for the escape of sand collecting in said depression.

. 3. In a flask element, a grip movably mounted thereupon havingdepressions on opposite sides, and sand escape holes affording communication between said depressions.

4. In a flask element, a grip bar with an outwardly declining depression on one side adjoining an edge of said element and a groove on the opposite side, said depression and groove being in communication through sand escape holes, and protuberances arising from'said declining depressions affording an even bearlng for the bar against said element.

5. In a cope, a grip'bar movably carried thereby, a handle pivoted upon the cope, means by which the handle is connected with the grip bar, and a flange outstanding from the cope toward whichthe handle is pressed in lifting the cope by the flange to introduce the grip bar into the cope.

6. In a cope, a grip bar movably carried thereby, a shaft pivoted on the cope having a crank end connected with the grip bar and a crank handle, and a flange outstanding from the cope, above which the crank handle is situated and toward which said handle is pressed upon lifting the cope by said flange to protect the grip bar into the cope.

7. A cope comprising plural sides, main grip bars mounted on opposite sides, sectional grip bars mounted on the remaining sides,

means loosely connectingeach of the main grip bars with adjacent sectional grip bars, means for moving the mam grip bars thus moving the sectional grip bars, and means by which the various grip bars are guided outwardly and inwardly respectlng sald SIdBS" durin movement.

8. n a cope, a main grip bar, a sectlonal grip bar adjoining an end of the main grip bar, a link loosely'connecting the adjacent ends of the main sectional grip bars, and

a Y b 0 simultaneously movlng the other.

9. In a cope, a grip bar mounted thereupon,

means for movin one of the grip bars thus the shaft by which the cope is adapted to be lifted thus simultaneously retracting the grip bar.

10. In a cope, a plurality of connected grip bars mountedthereon, a shaft having a crank end connected with one of the grip bars, and a handle forming part of the shaft by which the cope is adapted to be lifted thus simultaneously retracting all of the grip bars.

Signed at Springfield, in the county of Clark and State of Ohio, this 30 day of April, A. D. 1928.

ADAM DIEHL. 

